Alarm mechanism



No. 623,747; Patented Apr. 25, |899. A. s. TRuscoTT.

ALARM MEGHANISM.

(Application led Nov. 19, 189B.)

(No Model.)

F fr@ erated from any station.

rarns ALVIDORE SHERMAN TRUSCOTT, OF BOZEMAN, MONTANA.

ALARM MECHANISM.

SPECIFICATION forming part of Letters Patent No. 623,747, dated April25, 1899.

Application filed November 19, 1898. Serial No. 696,935. (No model.)

To all whom it may concern:

Be it known that I, ALvrDoRE SHERMAN TRUSCOTT, residing at Bozeman, inthe county of Gallatin and State of Montana, have invented a new anduseful Alarm Mechanism, of which the following is a specification.V

My invention relates to alarm mechanisms, and has for its object tofurnish the several doors and windows with means for sounding an alarmwhen they are opened or raised.

A further object of my invention is to furnish any numberofcalling-stations, either in a single building or in separate buildings,with means for sounding an alarm at a convenient station or location.

A further object of my invention is to furnish an improved central alarmmechanism whereby the operation of any of the calls or the opening of adoor or the raising of a window will sound an alarm-bell common to allof them and display on an indicating mech-`v anism the number of thestation operating the alarm.

With these objects in View my invention ally pointed out in the appendedclaims.

In order to enable others skilled in the art@ to which my invention mostnearly appertains i to make and use the same, I will now proceed todescribe its construction and operationf .reference being` had to theaccompanying drawings, in whichbox containing my central alarmmechanism, showing the indicators on the front and the alarm-bell on thetop thereof, the indicators being in position to show that calls havebeen made at stations l, 3, and 6. Fig. 2 is a view,

on a larger scale, of the box with the front removed, showing theinterior mechanism in elevation in normal condition ready to be op- Fig.3 is a similar view, on the same scale as Fig. 2, of the same parts, theupper portion being broken away and the mechanism in position showingthat an alarm has been sounded from station et. Fig. 4. is a verticalsectional View taken on the plane indicated by the broken line ll et ofFig. 2. Fig. 5 is a vertical sectional view taken on the plane indicatedby the broken line 5 5 of Fig. Fig. G is a vertical sectional view takenon the plane indicated by the broken line 6 o' of Fig. 3.

Like letters of reference mark the same parts wherever they occur in thevarious iigures of the drawings.

Referring to the drawings by letters, A is a box having a front A', aback A2, and sides A3 and A4. The front A' is hinged at its lower edge,as at A5 A5, and provided with a suitable lock and key. The front A andback A2 are provided with a series of oppositely-located parallelvertical equidistant grooves, as at l5, in which are located verticaltongues C' of a series of weights C, and to each of these weights isattached a cord D, leading'to a door, window shutter or sash, or abell-pull or button at any station at which an alarm is to be sounded.These cords all pass through a slot in a horizontal bar E, which is heldnormally down upon the weights by means of a cord F, secured at one endlthereof, passing l downward around a pulley F', upward and over a secondpulley F2, horizontally to and once or more around a pulley Gr, andthence downward, a weight H being attached to its end.

The horizontal bar E has at its opposite end a vertical arm E, havingside trunnions E2, which engage in grooves H in the inner faces ofthetwo nprights H2, located in the front and rear of the boX.

To the arm E' of the bar E are pivotally i connected two parallel arms II', the outer Figure l is a view in front elevation of the v ends ofwhich are pivotally connected between and to the outer ends of two pairsof parallel levers J J whose inner ends are pivoted to the standards oruprights I-I, the outer ends of the lever I and pair of levers J beingpivotally connected to the outer ends of the lever l and the pair oflevers J being pivotally connected to the ends of an upright link or barK. y

The pulley Gr has a series of tappet-pins G' projecting from the frontthereof, which during the rotation of the 'pulley strike against andoscillate two levers L, which operate two strikers M and cause them tosound an alarm on a gong N, mounted on top of the box.

Pivoted at their lower ends on brackets O', projecting from the front ofthe box, is a series of strips or covers O, which when up con- IOO ceala series of numbers corresponding to the weights, there being a weightto each station. These strips O have each an arm O2 at right angles tothe strip, which when the strip is up projects through a slot or hole O3in the front A into one of lthe grooves B and in the path of thecorresponding weight C.

The operation of my invention may be described as follows: A door orwindow being opened or disturbed or a call being made at a station, thecord D, leading to that door, window, or station, is pulled. This causesthe weight C, attached to that cord, to be raised,carrying up the barEwith it, thus pulling on the cord F, causing it to rotate the pulley Gand sound the alarm. The weight ll is also raised, and when the cord at4the station is released the weight C, attached to it, will drop to itsnormal position and weight ll will return bar E to its normal position,turning pulley G in the opposite direction and continuing the alarm. Inits upward movement the weight C will strike against arm O2 of the coverO corresponding with the weight, which will cause the strip or cover torotate on its pivot and drop, uncovering and 'exposing the numberindicatingT the door,

window, or station at which the alarm has been sounded. Any loweredcovers may be raised by pulling the cord P. The arrange* ment of thelevers l and J, in connection with the connecting-link K and arm E' ofbar E, will cause the bar to always move in a horizontal line no matterby which weightit is raised.

The advantages attending the use of my invention are numerous and willbe obvious from the foregoing description, and while I have illustratedand described what I believe to be the best means for carrying out myinvention I do not wish to be understood as limiting myself to the exactconstruction and arrangement herein shown, but hold that such changesand variations as might suggest themselves to the ordinary mechanicwould properly fall within the limit and scope of my invention.

Having thus fully described myinvention, what I claim as new, and desireto secure by Letters Patent, is-

l. In an alarm mechanism, the combination of a series of weights, cordsleading from said weights to the various alarm-stations, a lever restingon said weights, an alarm-bell and means connected with the leverwhereby movement thereof will sound the alarm, substantially asdescribed.

' 2. In an alarm mechanism, the combination of a series of weights,cords leading from said weights to the various alarm-stations, a leverresting on -said weights, an alarm-bell, a cord leading from said lever,an alarm -pulley around which said cord passes, and a weight attached tosaid cord, substantially as described.

3. In an alarm mechanism, the combination of a series of weights, cordsleading from said weights to the various alarm-stations, a leverrest-ing on said weights, an alarm-bell, a cord leading downward fromsaid lever, pulleys around which said cord passes upward andhorizontally, an alarm-pulley around which said cord passes, and aweight attached to the cord, substantially as described.

4. In an alarm mechanism, the combination of a series ot" weights, cordsleading from said weights to the various alarm-stations, a lever restingon said weights, an alarm-bell, a cord leading downward from said lever,pulleys around which said cord passes upward and horizontally, analarm-pulley around which said cord passes, tappet-pins projecting fromsaid pulley, and levers operated by said tappets to sound an alarm onthe bell, substantially as described.

5. In an alarm mechanism, the combination of a series of weights, a cordleading from each weight to a station from which an alarm may besounded, a slotted, horizontal lever resting on said weights throughwhich said cords pass, a vertical arm on said lever having trunnionsprojecting into vertical slots in upright standards, parallel leverspivoted to said vertical arm, and parallel levers pivoted to thestandards at one end and to the first-named levers at the other, and alink connecting the outer ends of the two series of levers,substantially as described.

6. In au alarm mechanism, the combination with the front and back of abox having oppositely-located vertical grooves in their inner faces,weights arranged to travel in said grooves, a series of numbers on theoutside of the front of the box indicating alarm-stations, a series ofstrip-covers pivoted to the outside of the front in position to coversaid numbers when raised, and arms projecting at right angles to saidcovers through a slot in the front into the path of the weights,substantially as described.

ALVIDORE SHERMAN 'l iUSCO'lT. Witnesses:

GEORGE Cox, W. S. DAVIDSON.

ICO

